Making a 3D Matrix and Adding Matrices to make a bigger matrix

Hello Guys, I have a small problem with the error in my for loop.

I am making a 3D matrix and afterwards using nested for loops to make a bigger matrix. here is my code. It is giving me the error

" Index in position 3 is invalid. Array indices must be positive integers or logical values."

I am writing my code:

B = [ 1 -1;

-1 1];

C = [ 2 -2;

-2 2];

D = [ 3 -3;

-3 3];

T = zeros(4,4)

d=zeros(2,2,3);

d(:,:,1) = B;

d(:,:,2) = C;

d(:,:,3) = D;

for k = 1:1:3

for i = 1:1:2

for j = 1:1:2

T(i+k-1,j+k-1) = d(i,j,k-1);

end

end

end

Answer 1

[Fabio Freschi]

In the loop, you wrote

T(i+k-1,j+k-1) = d(i,j,k-1);        

k starts from one, so you are trying to access the d(i,j,0) element that does not exists.

What is the expected output you want?